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The aFe Silver Bullet throttle body spacer for 2014 GM Silverado/Sierra 1500 5.3L is machined from 6061-T6 billet aluminum and uses a serrated/helix entry to create controlled airflow turbulence just before the intake, optimizing combustion. That geometry eliminates whistle found in some spacers and has produced measurable gains in horsepower and torque during testing while improving throttle response and efficiency.
aFe Silver Bullet Throttle Body Spacers TBS 2014 GM Silverado/Sierra 1500 V8 5.3L
